SI91872 Datasheet, PDF (5/9 Pages) Vishay Siliconix – 300-mA Low-Noise LDO Regulator With Error Flag and Discharge Option

Si91872
Vishay Siliconix
TYPICAL CHARACTERISTICS (INTERNALLY REGULATED, 25_C UNLESS NOTED)
Normalized Output Voltage vs. Load Current
0.30
0.15
V_IN = V_OUT(nom) + 1 V
0.00
−0.15
−0.30
−0.45
0.4
0.2
−0.0
−0.2
−0.4
−0.6
Normalized V_OUT vs. Temperature
V_IN = V_OUT(nom) + 1 V
I_OUT = 0 mA
I_OUT = 75 mA
I_OUT = 150 mA
I_OUT = 300 mA
−0.60
−0.8
−0.75
0
50
100 150 200 250 300
Load Current (mA)
−1.0
−40
−15
10
35
60
85
Ambient Temperature (_C)
GND Current vs. Load Current
150
V_OUT = 3.0 V
V_IN = 4.0 V
85_C
125
25_C
100
−40_C
75
50
0
50
100 150 200 250 300
Load Current (mA)
No Load GND Pin Current vs. Input Voltage
300
250
200
150
85_C
25_C
100
−40_C
50
0
2
3
4
5
6
7
Input Voltage (V)
Power Supply Rejection
0
C_IN = 1 mF
C_OUT = 1 mF
I_LOAD = 150 mA
−20 V_OUT = 3.0 V
−40
−60
−80
10
100
1000 10000 100000 1000000
Frequency (Hz)
Document Number: 72013
S-51147—Rev. F, 20-Jun-05
Output Short Circuit Current vs. Temperature
750
V_OUT = 2.6 V
725
700
675
650
625
600
−40
−15
10
35
60
85
AmbientTemperature (_C)
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